Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'c5410fc017c83357cb26430eb883f066176db9707bfacd6cee82493c090319c2' 
  AND token = '+Q6ZpAKkz8Hr78Z7mXxPk6v9kFHb0BBYOj43FR12Yfs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00052

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}